The Middle School Chorus is the first modulation effect from Summer School Electronics. This analog bucket-brigade chorus provides warm tones that can achieve the watery warble that players love. The second footswitch changes the Middle School Chorus to vibrato mode and and operates with a separate LFO and and Rate control. These independent controls allow the pedal to function as 2 separate effects (Chorus and Vibrato) that can be changed with the tap of a foot, and each modulate at their own rate, while sharing a depth control. This saves pedal board space and power jacks.

The Middle School Chorus is made in Syracuse, NY by working musicians, and operates on a 9-volt, negative center power supply.