Which are the good colleges accepting GRE between 305-320 for Masters in computer science? What is the last date to apply?

To gain admission to Purdue University,  it is important to prove English proficiency as Purdue courses are offered in English only. Below is the table showing different ELP Tests and the minimum scores required for the same: 

Students can book their GRE test dates once every 21 days, up to five times within any continuous rolling 12-month period (365 days). The GRE at Home is available around the clock, 7 days a week, with appointments available as early as 24 hours after you register. However, candidates would need to meet the system and environment requirements to go ahead with booking their GRE exam dates. The GRE Subject Test dates are available three times a year, and candidates can book their GRE Subject Test dates as often as they are available. 

The Keck Graduate Institute provides a test option for GRE scores for graduate students. This means it is not necessary to submit the scores. However, some graduate programs require for GRE score as a basic eligibility factor. Students can take the GRE multiple times and update their best scores to their application records. The applicant also uses their standardized test score to compensate for their academic GPA. In addition, students must make sure that they focus on other mandatory things, such as extracurricular activities, relevant experience, and more, along with aiming for high scores.