The Academic Word List
The Academic Word List (AWL) was developed by Averil Coxhead as her MA thesis at the School of Linguistics and Applied Language Studies at Victoria University of Wellington, New Zealand. The list contains 570 word families which were selected according to principles outlined below. The list does not include words that are in the most frequent 2000 words of English. The AWL was primarily made so that it could be used by teachers as part of a programme preparing learners for tertiary level study or used by students working alone to learn the words most needed to study at tertiary institutions.
Here is the first sublist of the AWL. You can get the other sublists from the website.
Sublist 1 of the Academic Word List - Most Frequent Words in Families
This sublist contains the most frequent words of the Academic Word List in the Academic Corpus.