Psychiatrists prescribe medicine, and may also use psychotherapy, although the vast majority do medical management and refer to a psychologist or other specialized therapist for weekly to bi-monthly psychotherapy.
Classroom is only available for Google Apps for Education users at this time.. In your web browser, sign out and sign in again with your Google Apps for Education account. On the mobile app, you'll be asked to add another account. Sign in with your Google Apps for Education account.
Here's what's different... When your school gets G Suite for Education, you get a professional-grade Google account for your entire school to share, including: Classroom, an app that is available only with G Suite for Education. Professional email at your school's domain (Ex: @yourschool.edu instead of @gmail.com)