I'm looking for summer English programs in the Bay (preferably San Francisco) that provide an immersive English learning experience for kids between the ages of 5-9. The children are international with some foundation for basic English, but would qualify them as Beginner. Envision 1-2 months of day-long classes / activities over the summer. Doesn't necessarily have to include room/board.

Anyone have experience or recommendations for something like this? Online searches have mainly turned up results for teen/pre-teen age groups.

Thanks!