There are several exceptions in FERPA that allow schools to share information without consent, including with parents. The most common exception related to this issue allows schools to share records with a parent if the student is a dependent of the parent for tax purposes under IRS tax rules.
Example: Sharing a student's grades, disciplinary records, or personal information with someone who doesn't have a legitimate educational interest or without the student's consent.
Furthermore, schools may disclose, without consent, directory information, which FERPA defines as a student's name, address, telephone number, date and place of birth, honors and awards, and dates of attendance.