How to fix Spark form mistake?

S23 was filling out his Spark form. He added the high school he attended for 9th grade in addition to the high school he’s attending for 10th-12th. It was only later that he saw the requirement to add the 9th grade courses under his current school. He’s done that, but he can’t figure out how to delete his 9th grade high school off the form. Does anyone know? He’s emailed the help desk, but they say they’ll get back to him in 2-4 weeks. Arrgh.