בעזרת ה' יתברך-יום ג' פרשת תרומה, א' דר"ח אדר א', שנת תשע"ט
I strongly request from you to work along with the school; if there is a rule that the girls cannot bring cell phones to school, please don’t allow your daughter to bring one and tell her to hide it from the principal etc. It is detrimental to the Chinuch of your daughter if she hears one thing in school, and at home she hears the opposite. Later when the school demands something else, even if it is something you agree on, your daughter will find reasons not to accept it because she knows that her mother permits her to go against the school rules.
I hope this straightens things out, and from today onwards you will be on the same page as what the school requires from the students, you should certainly encourage your daughters to listen to everything the school demands.
If you have a few minutes during the day, say some Tehillim, and hand over your worries to Hashem; one cannot imagine the greatness of Tefilla; when one would know how powerful every word they utter is, they would talk to Hashem from morning until night.
May Hashem help you succeed in all your endeavors.