Tamaulipas Bans Phones in Schools From November: How Youth Football Has Been Measuring Attention

At 7:40 in the morning at a youth training centre on the outskirts of Saigon, 22 phones are lined up in a plastic tray by the dressing-room door. I start a stopwatch and log the moment each player takes his first touch in the warm-up rondo.

One U15 group. Same session plan. Same pitch. But the group that walked out after two hours in a classroom with tablets took roughly half a beat longer to settle its touch rhythm. I do not call that evidence. One session, a dozen or so children, one person counting — that is observation, not conclusion.

Which is exactly why I stopped when I read the report from Tamaulipas.

The state of Tamaulipas, in north-eastern Mexico, has announced restrictions on phone and tablet use in schools from November. The scope runs from primary and lower-secondary through upper-secondary and into higher-education institutions. There are exceptions for emergencies and for pedagogical purposes. Specific sanctions have not been defined. A state forum will be convened to finalise the criteria.

The main source of comment is the state Secretary of Education, Miguel Ángel Valdez García. He stressed that the measure is not absolute, and cited a survey showing 86% of parents and teachers in favour. That figure comes with no method, no sample size, no collection date and no polling body. In the way I work, it sits in the unverified drawer.

I am not bringing this item in because it is football. It is education. I am bringing it in because youth football sits right behind that classroom door.

A 13-year-old at any academy spends six to seven hours a day in school, plus travel. What is left is divided between family, homework, sleep and football. If attention is the raw material of every session, then the school environment is where that material is either stored or spoiled.

Football has a measure for attention, and it is not a feeling.

I do not watch football with my eyes. I measure it with geometry. And for more than a decade now, that geometry has carried an extra variable: scanning frequency.

Research by Geir Jordet at the Norwegian School of Sport Sciences, conducted on English Premier League players, showed that the frequency of scanning the environment before receiving the ball correlates positively with pass completion. Players who scan less tend to decide later. Players who scan more release the ball faster and are less often forced backwards. Luka Modric is the example most often cited in the video-analysis sessions I have attended: he scans continuously, even when the ball is thirty metres away.

The key point is that scanning is not innate gift. It is a coachable skill, and any coachable skill is affected by the state of attention a player carries onto the pitch.

I tracked fourteen U15 sessions over the past four months at two different centres, logging three metrics: scans in the first ten minutes of each half, passes made in under 1.5 seconds, and first-touch control errors. This is personal data, with no statistical value at scale. But the trend was stable enough to be hard to ignore: the group training in the after-school slot, straight out of class, recorded roughly 15% fewer early-half scans than the group training on weekend mornings. By the third half, the gap had narrowed to almost nothing.

In other words, what is lost is not ability. What is lost is cognitive warm-up time.

Major academies around the world have behaved as if they knew this for years. Device rules in dormitories, sleep schedules, phone-free video rooms, mandatory fifteen-minute analysis blocks without interruption — all of these are attention-state management measures. At national youth-team level, confiscating devices during short camps has become standard practice. Not because phones are bad. Because the coaching window is too short to share.

What I have never seen, in any file, is a sufficiently rigorous controlled study linking device behaviour at school to skill output between the ages of 12 and 16. I have looked. It does not exist yet.

Known data: - Tamaulipas imposes phone and tablet restrictions in schools from November, across multiple levels, with exceptions for emergencies and pedagogical use. - Sanctions and detailed criteria have not been published; a state forum will handle that. - The 86% support figure is self-reported, with no accompanying method. - Geir Jordet's research established a correlation between scanning frequency and passing effectiveness at professional level.

What remains in doubt: - No data shows that a school rule improves football skill output at academy age. - It is unclear how the rule will be enforced at classroom level, and who monitors it. - It is unclear where, when and with whom the 86% sample was taken.

There is a trap sitting exactly where most people assume the obvious.

A device ban is not a coaching method. It is an environmental change. Those are two different things, and mixing them is the fastest route to a point three years from now where nobody knows whether they were right or wrong, or why.

If attention is taken away by screens, giving it back cannot be achieved simply by putting screens away. A child sitting with nothing to do does not automatically switch to reading space. What comes back first is boredom. Boredom is good raw material, but it needs to be shaped into drills: deliberate scanning, delayed feedback, small-sided games with many touches, ball-free exercises that force the eyes to read the lines. Without that shaping, a locked tablet is simply replaced by an open window.

The second trap is causality.

In June 2026, when European leagues restarted in empty stadiums, I collected data from 120 matches across five major leagues and found that the home points rate at a handful of clubs dropped markedly. I wrote the piece with a condition attached: this is one season of data, not enough to call it a rule. Had I dropped that condition, I would have sold readers a law off a single sample.

In Tamaulipas, the same test awaits. The state could declare success in 2028, when sports participation rises, or grades rise, or any indicator rises. There will be no control group. No state will keep the old rule in place for comparison. And so an environmental change will be credited with an outcome it may never have produced.

When the home ground is no longer a fortress, data becomes the only wall I trust. Here too: if that wall is not built in advance, every word of praise will be nothing but an echo.

And one more thing I want to say plainly, because it belongs to the human part and not to the spreadsheet. A 13-year-old banned from a phone for eight hours does not spontaneously become a better scanner of space. He is simply in a longer day, with fewer exits. The adults writing the rule should remember that.

Football is a game of margins. Tactics is the study of the rules hidden in those margins.

If Tamaulipas wants to turn an administrative rule into a verifiable result, the work does not lie in November. It lies in choosing a metric in advance, measuring in October, and measuring again the following March, on the same group, with the same session plan. The three metrics I use — scans in the first ten minutes of a half, passes under 1.5 seconds, first-touch errors — are simple enough for any school to record.

A formation is only paper. The heart of a team keeps it from blowing away in the wind. But a rule needs a different sheet of paper: one with numbers before and numbers after.

What I want to verify at my next session: if phones leave the dressing room for three months, does the early-half scan count of that U15 group rise — and by how much?