To a certain degree. Those who prepare the O-Net test papers are teachers in the university's demonstration schools (Sathit in vernacular). Teachers in other schools are not recruited. This may make this year's O-Net seemingly more difficult than usual with more analysis than simple rote learning. This is the outstanding point of demonstration schools whose students don't complain about this type of test while students in most schools countrywide are taught mainly by rote, emphasising learning from textbooks, not analysis.