Studying at Test Success for four weeks helped me to learn a lot. Especially the reading section. I improved my reading score a lot. The first time I took the TOEFL test my reading score was 9. Then, I went to Test Success and my reading score jumped to 23 after only four weeks.
Also, in the class everybody has a great desire to beat the test. This point made me feel I am going in the right direction because everyone has the same goal "to beat the TOEFL"