Marin County school board votes for bell-to-bell phone ban, hooray!

This is a big win.

Late in the evening of April 14, the Tamalpais Union High School District board of trustees voted to prohibit phone use by students during the entire school day, from bell to bell, starting at the beginning of the 2026-2027 school year. The board also voted to buy NuKase locking cases at an estimated initial cost of around $100,000. This is a big win for everyone.

The board voted for the phone ban and NuKase purchase together in a single motion, which carried by a vote of 3-2. If the board had voted on the ban as a stand-alone, it would have passed by a vote of 4-1. Board member Emily Uhlhorn would have voted for the ban but opposed the purchase of NuKase, and thus voted no. Board member Ida Green opposed the ban. The remaining three board members, Jennifer Holden, Cynthia Roenisch, and Kevin Saavedra, voted in favor of the phone ban and NuKase package.

What the school district got right.

The four board members who supported the ban recognized that the school day is not just a collection of independent classes, but a cohesive experience. They accepted the superintendent’s argument that using phones between classes and during lunch is harmful to students. At a fundamental level, the policy reasserts educational and moral responsibility for the entire (bell-to-bell) school day. This was logical: if a student scrambles their brain with hyperactive short-form content in between classes and throughout lunch, he or she will be less able to retain and process information during class. Every exposure to short-form content rewires the brain to expect even more high-octane, short-form content, which in turn makes sustained focus more difficult. The board understood this, as demonstrated by their comments.

The board majority also properly rejected the objections that students, parents, and board member Ida Green raised.

One objection was that students need their phones for safety reasons. The suggestion was that students might leave campus for lunch, get hurt, and find themselves unable to dial 911 or a parent. But this concern is misplaced because students are almost never more than a few seconds from adults during the school day, including when they are off campus during lunch. The idea that nobody would help an injured person or respond to a car accident is just wrong—and is the kind of mistrustful hyper-individualism that over-dependency on phones tends to encourage. And as board member Jennifer Holden pointed out, a teenager with a phone in a car is more likely to get hurt than a teenager in a car without a phone. A phone-free policy could help prevent accidents and will not hinder public response to accidents.

Some people objected that students need to have phones so that they can communicate with their parents during the school day. It is true that being able to communicate with children during the day can be convenient, but it is also unnecessary. Again, in an emergency, an adult is standing nearby. The benefit of eliminating distraction and harmful exposure to short-form video and other bursts of scrolling content and video games outweighs the loss of convenient communication.

At the suggestion of a teacher, more than 50 students wrote letters to the board before the meeting. Perhaps the most prevalent student objection, the board said, was that the phone is their private property and they can do whatever they want with it and nobody can tell them otherwise. Some parents also take the position that a student’s phone usage should not be the subject of public policy, but rather should be a family affair. If parents don’t want their kids to use phones, they argue, then fine, the parent can make that rule, but why should everyone else suffer? This is a serious objection, but I think there is an equally serious answer: student phone use is so all-encompassing and interdependent that very few families, if any, can extricate themselves on their own.

No parent wants their child to be left out because he or she is the only one who can’t bring his or her phone to school or use it. Because it is not realistic or fair to ask teenagers to opt out of a social circle on their own (while friends exchange messages all day without them), this is a collective action problem that requires a community response. The libertarian view that everybody should go it alone fails profoundly on this issue, just as it doesn’t work with other issues that require or benefit from collective action, from mandatory vaccines to seatbelts to environmental regulation.

We’re going to have to do this together, but the outcome will be worth it. Imagine students talking to each other during passing time and lunch instead of hunching over short-form reels and video games by themselves. Imagine students paying better attention during class, and retaining information better. Imagine students deciding that maybe they should choose to use their phone less, including after the school day ends.

What the school district might be missing.

The school district postponed development of the details of the implementation until after the vote authorizing the purchase of NuKase. But although the logistical details were light, the superintendent argued that NuKase would minimize teacher involvement in enforcing the phone ban. As I have argued and as board member Emily Uhlhorn articulated at the board meeting, however, circumventing the NuKase policy would be trivially easy. A student could put his phone in a backpack and then tell the teacher than he didn’t bring one that day. Would the teacher then search the student’s bag? No, of course not. Alternatively, a student could put an old burner phone in the NuKase case. Either way, anyone who wants to avoid the NuKase can do so, such that the real policy is, de facto, a policy requiring students to keep their (real) phones off and out of sight. Teacher enforcement will be required; NuKase alone is not enforcement.

My point is that any device policy is only as good as teacher and parent commitment to the policy. To bring teachers and parents on board, the school district will need a sustained campaign of advocacy and information. Again, this is a cultural and collective-action issue. If too many teachers or parents are hostile or indifferent to policy, it will fail. A top-down commitment at the administrative level + NuKase does not equal success. In fact, in my view, NuKase barely alters the equation. I would say that administrative leadership + teacher commitment + parent commitment = success.

This is not to say that NuKase accomplishes nothing. It does two things. For one, it is a visible symbol of the school’s commitment and marks the beginning of a new era in a way that “backpack-only” rule would not. For another, although easy to circumvent, there are certainly rule followers who will not break rules even when they could get away with it. For the rule followers, the NuKase offers a reasonably convenient way to stay off the phone all day—by voluntarily putting the student’s working, real phone in the case. This is good, but administrators should not expect NuKase to play any role in enforcement. Teachers will be doing the enforcing, and for that, they and we will need clear rules and teacher support.

Conclusion: This is a milestone to celebrate and build upon.

The significant logistical and cultural challenges that lie ahead should not detract from the board’s big accomplishment. The majority took a big step toward limiting exposure to harmful content-delivery systems. And it implicitly reshaped what school is meant to be.