Highland Park High School issued the following announcement.
Registration Information will be updated as Information is available!
Summer School Information
Only students who are classified as freshmen or above for the fall semester immediately following summer school are eligible to attend HPHS Summer School. Prior to starting a summer school course at HPHS, a student must contact their counselor with any questions prior to registering for a summer school course. Please see the counseling website for information related to summer courses offered outside of HPISD. If approval is not granted prior to enrollment, the student may not be awarded credit toward graduation. A student may normally earn a maximum of two semesters of credit (one full course unit) in one summer. As HPHS Summer School is self-funded, a minimum number of students must register for each course to cover costs.
All courses are offered Monday - Friday during the summer.
Original source can be found here.