您好：

关于是否参加Gateway， 答案是：可以，官网信息如下：
All applicants apply online, using either the Middlesex application through Gateway to Prep Schools (Gateway) or the Standard Application Online (SAO). We do not have a preference between the two applications, but we require that applicants submit materials through only one application platform.

是否需要校园面试，答案是：不一定， 关于这点，官网信息如下：
1. How do I schedule an interview?
If you intend to visit Middlesex for a tour and interview, and English is not your native language, you must first submit an official copy of your TOEFL scores. Given that Middlesex expects English proficiency, we expect all applicants to score at least 100 on the TOEFL. This policy does not apply to students who have attended an international school or school in the United States for two or more years. As a reminder, an interview is not required at Middlesex.

这种简单的问题自己不能通过官网解决的就不要想Middlesex School这档的学校了，如果这都自己解决不了进去也是受罪

有gateway，这个级别的学校最好去校面 我也申了mx

这问题通过官网解决

有的，最好可以校园面试