Depends on the class sizes - I would expect variation in there. With 25-30 in the 90s I recall there being at least 4-5 in a class commonly. Without context that doesn't say much other than it stood out.
That isn't reliable - statistical literacy and especially /native/ staristical literacy is shockingly rare and this is exploited constantly by people with agendas. People think crime is on the rise when it is at historic lows and 1st World Pollution in the toxin sense is getting worse when it has gotten better in many ways.
(The Environment is always a multifaceted thing. Is it better or worse for a vast desert to turn into a monoculture forest? Nonbiodegradability is a bad thing but it technically does sequester some carbon. Still air without lead in it is far better.)
That isn't reliable - statistical literacy and especially /native/ staristical literacy is shockingly rare and this is exploited constantly by people with agendas. People think crime is on the rise when it is at historic lows and 1st World Pollution in the toxin sense is getting worse when it has gotten better in many ways.
(The Environment is always a multifaceted thing. Is it better or worse for a vast desert to turn into a monoculture forest? Nonbiodegradability is a bad thing but it technically does sequester some carbon. Still air without lead in it is far better.)