I thought we were talking use of tests in general. Yes, that's where the challenge lies. All this lovely one to one help is not always possible.
Test are a tool among a whole battery of other tools.
In 5 yrs. Too bad, he's retiring. Make good on the promise you made at graduation to keep in touch. He spoke with the wisdom that can only come from experience, like a guy who went blind because he looked at a solar eclipse without one of those boxes with a pinhole in it and now goes around the country speaking at high schools about the dangers of looking at a solar eclipse without one of those boxes with a pinhole in it.