The most effective phone calls take less than a minute: say your name, your city or ZIP code, and what you support/oppose, maybe a sentence on why. You’ll be marked down on a spread sheet that is discussed at the daily office strategy meeting.
Other actions like brief emails, meeting in-person at the district office, meeting in-person at the DC office, can also be effective, but take more time and energy. Emails aren’t always read right away like a phone call must be answered for example. And you generally need to make an appointment for an in-person meeting.
If anyone doubts it, just look what lunatic conservative Karens have done at school board meetings across the country.
It’s gross when it’s about banning books, but when it’s something positive, it’s actually pretty amazing to see. Like the handful of students that you’d see show up between Karens to give impassioned pleas to, you know, please don’t do that.