CSU application

My son goes to a traditional public HS, but took a Spanish2 in a Charter HS during a summer. His grades for it are already reflected in the transcript from his regular HS. It’s noted with the Charter HS name.
Question for CSU application, does he need to enter these grades under his Home school name, or under the Charter HS name?
He received a transcript from the Charter HS. Comparing the transcript from Charter HS vs. the regular HS, the course code numbers are different. The Course names are also different (Spanish 2 vs. Spanish 2 Sem 1 APX / Spanish 2 Sem 2 APX).
He’s CA in-state student

I would list under the school where he took the class even if it is on his public HS transcript.

For example, some high schools will list classes taken at community college on the HS transcript. On the CSU app those classes should be listed under the CC. If accepted, a transcript from all schools attended is necessary.