Summer

High School Summer Program

General Info


  • Register online using link provided. Please note there are two forms to read and acknowledge as indicated on the registration form.
  • Please note that some classes may be converted to independent study or cancelled if minimum enrollment is not met.
  • A $100 withdrawal fee will be charged for withdrawal from any courses after registering.  No refunds will be issued after June 9. 

Justin-Siena High School

4026 Maher Street
Napa, CA, 94558
United States
T: 707.255.0950 
F: 707.255.0334
Justin-Siena is a Lasallian Catholic college preparatory community that serves young people in grades 9–12.