What a terribly ambiguous title. "Failing grades soar after xyz" makes it sound like xyz has helped what were previously terrible, failing grades become good ones.
No matter how many times I read it, I can't interpret it the way you're suggesting. "x soars after y" always reads as "x increases a lot because of y". I don't really get what you're saying. Are you maybe saying that "soars" might mean "get better", so "failing grades soar" might mean there are actually less failing grades? That's not how I've ever understood that word.
If she told you that afterwards the failing grades had "soared", it could easily be read either way:
- The (previously failing) grades had increased, so the program must be working very well.
- The percent of grades that count as failing had increased, so the program must actually be terrible.