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Attempting to use online social-networking tools, read blogs, or see multimedia presentations on a classroom computer can generate a message that鈥檚 become all too familiar in many American schools: Access Denied.

So what teachers and students in Trussville, Ala., are doing on the Internet might be considered illicit activity in other districts across the country. Lessons in the 4,100-student district near Birmingham include YouTube videos and film trailers, Internet chats with peers in Nigeria or award-winning children鈥檚 authors, even blogging sessions and Web research on open search engines such as Google.

Faced with concerns about Internet predators, cyberbullying, students鈥� sharing of inappropriate content on social networks, and the abundance of sexually explicit or violent content online, many school leaders and technology directors are placing tighter restrictions on Web access to shield students from potential harm.

Yet in Trussville and other like-minded school systems, educators and school boards are instead expanding access to online resources, including social-networking sites, for students and teachers. Instead of blocking the many exit ramps and side routes on the information superhighway, they have decided that educating students and teachers on how to navigate the Internet鈥檚 vast resources responsibly, safely, and productively鈥攁nd setting clear rules and expectations for doing so鈥攊s the best way to head off online collisions.

鈥淲e are known in our district for technology, so I don鈥檛 see how you can teach kids 21st-century values if you鈥檙e not teaching them digital citizenship and appropriate ways of sharing and using everything that鈥檚 available on the Web,鈥� said Shawn Nutting, the technology director for the Trussville district. 鈥淗ow can you, in 2009, not use the Internet for everything? It blows me away that all these schools block things out鈥� that are valuable.

The Internet filters used in most schools allow educators to carefully screen Web sites by keyword or category to ensure that students can鈥檛 access obscene images, get diverted by online games, hack in to confidential files, or use software programs that can damage school computers. That security, however, has come at a cost, many observers say.

鈥淭he majority of our schools are overblocking and overcensoring the Web,鈥� said Wesley Fryer, the executive director of Storychasers Inc., a nonprofit organization that hosts a digital storytelling site that provides historical resources to Oklahoma schools and communities. Mr. Fryer, a digital-learning consultant and former elementary school teacher in Oklahoma City, writes frequently about educational technology issues on his blog, .

鈥淪ome of that is understandable because of the risk-averse, conservative nature of schools,鈥� he said. 鈥淢y position is not 鈥榙on鈥檛 block,鈥� but let鈥檚 filter reasonably and let鈥檚 also talk with students about choices and digital literacy and ethics, and let鈥檚 prepare kids for the unfiltered Web.鈥�

Advocating Openness

While schools are required by federal and state laws to block pornography and other content that poses a danger to minors, Internet-filtering software often prevents students from accessing information on legitimate topics that tend to get caught in the censoring process: think breast cancer, sexuality, or even innocuous keywords that sound like blocked terms. One teacher who commented on one of Mr. Fryer鈥檚 blog posts, for example, complained that a search for biographical information on a person named Thacker was caught by his school鈥檚 Internet filter because the prohibited term 鈥渉acker鈥� is included within the spelling of the word.

When the Trussville city schools broke off from Alabama鈥檚 Jefferson County district five years ago, leaders of the Trussville system decided that after securing the computer network and taking all the legally required steps to ensure Internet safety, they would err on the side of openness when it came to accessing Web content.

鈥淲e know kids use these tools, so we really feel obligated to help kids use them right and prepare them for what they face in the world every day,鈥� said Superintendent Suzanne Freeman, who has two teenagers attending high school in the district. 鈥淜ids have access to a lot [on the Internet], whether we want to believe it or not. I would worry about it if we didn鈥檛 prepare kids to use these tools properly.鈥�

Training Students Early

That philosophy has served students in Trussville鈥檚 Paine Primary School well, according to library media specialist Rachel Brockman.

The K-2 school provides e-mail addresses to each of its 880 students and maintains accounts on the Facebook and Twitter networking sites. Children can also interact with peers in other schools and across the country through protected wiki spaces and blogs the school has set up.

鈥淲e basically start to train students as early as kindergarten about things to look for out there and strategies to help them stay safe鈥� on the Internet, Ms. Brockman said. 鈥淩ather than saying this is a scary tool and something bad could happen, instead we believe it鈥檚 an incredible tool that connects you with the entire world out there. ... [L]et鈥檚 show you the best way to use it.鈥�

As Trussville students move through the grades and encounter more-complex educational content and expectations, their Internet access is incrementally expanded. The district also varies filter levels for teachers, allowing them to call up Facebook or YouTube in class. They can also request that other sites be unblocked that have an application to their class lessons.

For a 12th grade English literature class, teacher Eric Jenkins was able to use a YouTube clip about the upcoming Hollywood film 鈥淟egion鈥� to help students identify the themes and archetypes in popular culture that were influenced by John Milton鈥檚 17th-century epic poem Paradise Lost.

Students in Mr. Jenkins鈥� classes at Hewitt-Trussville High School use the Internet regularly to research papers, to blog about texts they鈥檝e read, and to learn the rules of digital citizenship, meaning responsible Web surfing.

鈥淚鈥檓 a big advocate for experiential learning, but it鈥檚 kind of hard to teach Internet etiquette or rules of how to act and interact online without exposing them to the stuff that鈥檚 out there,鈥� Mr. Jenkins said. 鈥淚t鈥檚 hard to teach those things in a vacuum.鈥�

Media experts say such real-world experience is critical to helping students tap the Internet for the kinds of practical tasks they will encounter every day for professional and personal purposes.

鈥淭he best filters we can provide to kids are the ones we build in their brains,鈥� said Rebecca Randall, the vice president for outreach for Common Sense Media, a San Francisco-based nonprofit organization that provides free class materials and parent education programs to districts on Internet safety.

In 2001, the Children鈥檚 Internet Protection Act instituted new requirements for schools to establish policies and safeguards for Internet use as a condition of receiving federal E-rate funding.

Many districts have responded by restricting any potentially troublesome sites. But many educators and media specialists complain that the filters are set too broadly and cannot discriminate between good and bad content. Drawing the line between what material is acceptable and what鈥檚 not is a local decision that has to take into account each district鈥檚 comfort level with using Internet content, said Ann Flynn, the director of the educational technology program for the National School Boards Association, in Alexandria, Va.

鈥淲e recognize that districts have to have the tools in place to meet guidelines to be in compliance with federal requirements,鈥� she said. 鈥淏ut a really good dose of common sense can鈥檛 be emphasized enough.鈥�

Ms. Flynn points to a survey conducted in 2002 by the Kaiser Family Foundation that found that setting filter levels high did not necessarily block more inappropriate content, but could prevent students from getting important health information that they might need for school or personal purposes.

And sometimes local sensibilities can get schools in trouble.

The American Civil Liberties Union sued Tennesee鈥檚 Knox County and Nashville school districts on behalf of several students and a school librarian for blocking Internet sites related to gay and lesbian issues. While the districts鈥� filtering software prohibited students from accessing sites that provided information and resources on the subject, it did not block sites run by organizations that promoted the controversial view that homosexuals can be 鈥渞ehabilitated鈥� and become heterosexuals. Last month, a federal court dismissed the lawsuit after school officials agreed to unblock the sites.

Balancing Safety and Access

Several groups have provided guidance to help schools balance safety and access.

The American Library Association鈥檚 Center for Intellectual Freedom, for example, recommends that schools minimize filtering so they do not infringe students鈥� rights to access information and to express themselves.

鈥淧rohibiting young people from accessing Internet resources, including social-networking tools, does not teach safe behavior,鈥� said Angela Maycock, the assistant director of the center. 鈥淔iltering leaves young people without the knowledge and experience they need to protect their own privacy online, and, more importantly, to engage in responsible speech.鈥�

In Trussville and most public school districts nationwide, free-access social-networking sites such as MySpace are blocked or severely restricted. Video-sharing sites, like YouTube, are generally characterized as troublesome sites as well, although some districts allow teachers to use them in their classrooms.

Students generally want those opportunities at school as well. A national survey of middle and high school students found that most believe schools are not preparing them for the kinds of technology-based tasks that have become essential for success at school and at work, according to findings of the from the Speak Up National Research Project, released in March.

Students are using personal technology tools more readily to study subject matter, collaborate with classmates, and complete assignments than they were several years ago, but they are generally asked to 鈥減ower down鈥� at school and abandon the electronic resources they rely on for learning outside of class, the survey found. Administrators generally cite safety issues and concerns that students will misuse such tools to dawdle, cheat, or view inappropriate content in school as reasons for not offering more open online access to students. (鈥淪tudents See Schools Inhibiting Their Use of New Technologies,鈥�, April 1, 2009.)

A commissioned by the NSBA found that social networking can be beneficial to students, and urged school board members to 鈥渇ind ways to harness the educational value鈥� of so-called Web 2.0 tools, such as setting up chat rooms or online journals that allow students to collaborate on their classwork. The 2007 report also told school boards to re-evaluate policies that ban or tightly restrict the use of the Internet or social-networking sites.

鈥楬ot Topic鈥�

School leaders in Albemarle County, Va., near Charlottesville, did just such a reassessment when students complained that the filtering process for the 12,600-student district was blocking access to too many relevant and potentially useful resources.

鈥淭his issue was a hot topic for our students,鈥� said Luvelle Brown, the district鈥檚 chief information officer. After students complained about being blocked from essential resources online, the district established a committee last year to re-evaluate its filtering policy.

Administrators and school board members agreed to allow access to most Web sites and then to decide which ones needed to be added to the 鈥渂locked鈥� list. Any sites that were deemed pornographic or that could breach the district鈥檚 network were obvious targets. But the advisory committee agreed that sites with racist or other hateful materials were not. Free-access social networks, however, are banned.

Officials also set up a way for teachers and students to make a case that certain filtered sites be unblocked for their potential educational value.

鈥淲e ended up deciding that what was happening was that we were only blocking ourselves from those resources,鈥� Mr. Brown said, referring to the resourcefulness of technologically adept students who have found ways to work around Internet filters.

鈥淲hether we were allowing them or not, [students] were gaining access to those resources,鈥� he said. 鈥淲hat we were more worried about was the need for students鈥� getting access to the information they needed.鈥�

The Albemarle County district, like the Trussville schools, increased its professional development and support services for teachers to help them manage Internet use and teach students about the promise and potential dangers of online resources.

鈥淲e believe that you can鈥檛 have goals about kids鈥� collaborating globally and then block their ability to do that,鈥� said Becky Fisher, the Virginia district鈥檚 technology coordinator.

As a former teacher, Ms. Fisher tends to champion her colleagues鈥� need for flexibility in using Web tools and helps them use the district鈥檚 Internet-safety curriculum to develop in students the discipline they need to use the Web appropriately.

鈥淏efore the new filtering policy, I was incredibly frustrated,鈥� said Paula White, a teacher at Albemarle鈥檚 Crozet Elementary School.

Ms. White said her plan to have her students collaborate on a project with a school in England last year was almost derailed because the district鈥檚 filter blocked the conferencing site she needed to set up a video link between the classrooms. Now, such sites are more readily available, she said.

鈥淚t鈥檚 all about teaching them how to try to avoid getting into places they don鈥檛 want to be,鈥� she said, 鈥渁nd if they should happen to get there, what to do to get out of them.鈥�

Experts like Mr. Fryer of have been trying to make that case to more school leaders.

鈥淚f we don鈥檛 want to take risks, let鈥檚 not let kids go outside for recess and let鈥檚 not let anyone go on the Internet,鈥� Mr. Fryer said. 鈥淏ut if we recognize what鈥檚 developmentally appropriate, we know we need to get them outside exercising and playing in digital sandboxes and giving them opportunities to become ethical digital citizens.鈥�