Inspectors visited the college on February 27 and 28.
Crawley College’s last full Ofsted inspection took place in October 2016 when the college was Central Sussex College and was judged as ‘requires improvement’.
The Chichester College Group acquired the college in August 2017 and renamed it Crawley College.
A spokesman said: “Since then the college has become part of the Chichester College Group, with a focus on improving teaching and learning and the student experience at Crawley College.
The report highlighted improvements in student achievement since the merger in August 2017, attributing this to the more active support given to students.
Vicki Illingworth, Crawley College principal , said: “We are absolutely delighted with the outcome of our latest monitoring visit, which show an amazing amount of progress over a short period of time.
Shelagh Legrave, chief executive officer of the Chichester College Group, added: “It is very rare for colleges to receive four ‘significant progress’ grades in monitoring visit, so I think everyone at the Group should be very proud of this achievement.