Fund-raisers at educational institutions estimate that contributions during the fiscal year that ended June 30 will be up 4.7 percent over the previous year, and that the year that started July 1 will see gains of 5.5 percent. Those figures come from a survey conducted by the Council for Advancement and Support of Education. For the year just concluded, the survey found private institutions projecting much better results than did public institutions (gains of 5.7 percent vs. 2.6 percent).