A multitude or research has been done comparing HESI and NCLEX. In general, HESI is VERY good at predicting NCLEX success/failure. However, this does not mean that just because you did well on HESI that you should not prepare for the NCLEX. It just means that you should go into your NCLEX with the confidence that you have both prepared for the test AND shown on HESI that you can succeed. GOOD LUCK!