The I.P.C.C. has in its thousands of pages
a large number of caveats, but the summary numbers (e.g. the 18 - 59 cm) from I.P.C.C. is exactly what the thousands of scientists found most necessary for us to know and most well - based numbers for science to talk about.
Despite this
caveat, the researchers hope that the common ranges
of practices shared by the high - impact schools will «be
of particular interest to schools that receive
large numbers of below - grade - level students and want to accelerate their learning.»