The real sharp practice comes from schools where students are signed off as ready for each progress test, even though they haven't accumulated the neccessary split of hours as laid down by the school for internal tests, but where they have achieved the neccessary total hours. Students are then informed at the end of their training that licences can't be issued until the student has accumulated the neccessary minimums in all categories, eg P1. The school now has the student firmly by the short and curlies and is able to extract several hundred pounds in extra revenue for additional flying resulting from shoddy admin.