I no longer instruct on light aircraft but it seemed to me that just about every CFI conjured up a set of speeds all rounded up to the next 10 kts so as to be easy to remember/give better visibility/better cooling.
I was taught to fly on a Cessna 150 at the book speeds and to land with 40 degrees of flap.
The last school I taught at insisted the C 152 was landed flap 20 full flap was for short field landings only and the 172 was operated the same way, and funnily enough they floated a long way. When I did check flights or the JAR flight with an instructor I would always look at operations with full flap at the POH speeds, result aircraft lands in the right place on the mains and uses significantly less runway.
BEagle has it right
