SCOTUS might take up a K-12 student speech case again, this one involving a disgruntled cheerleader, a snapchat message, and a suspension from the team. Don't hold your breath for the Court to protect free speech.
https://www.nytimes.com/2020/12/28/us/supreme-court-schools-free-speech.html

Since Tinker the courts have repeatedly limited student speech. Student newspapers are not protected; lewd speech is not protected; the 'learning environment' must be protected first. This has only become worse when schools moved online
K-12 students are not treated by the courts as citizens. While Justice Roberts may see himself as the most aggressive defender of free speech, he still allows a school to suspend a student for a cryptic, silly banner saying Bong Hits 4Jesus at a school event
When these same kids get to college, everyone is shocked, shocked at how bad they are at practicing and respecting free speech. https://firstamendmentwatch.org/new-report-on-first-amendment-on-campus-reveals-that-a-growing-number-of-college-students-favor-some-restrictions-on-speech/
Schools should be WAY more open to students trying out ideas and making mistakes, in class and on snapchat. They should also make free speech - and how to be a citizen in this messy American democracy today - a focus of their work
Young people are engaged. They are voting. They are speaking out. They are also wrong and mean and silly, and have some terrible views. https://www.nytimes.com/2020/12/26/us/mimi-groves-jimmy-galligan-racial-slurs.html
Instead of looking for ways to censor them, schools should teach them how to use their voice effectively. Free speech is evolving with technology, and with democracy. Help students get ready to participate. Let them speak.