Can a 16 year old student pilot "pre-take" the checkride? I am a student pilot, and I soloed about one month after my 16th birthday. I know I can't become a private pilot until I am 17, but I'm wondering if there is a way to take the check ride before you are 17, but be limited to the privileges of a student pilot until you are 17, at which point you can exercise the privileges of a private pilot? I doubt it, but its worth asking. I feel like I am pretty much ready to take the check ride, but I have to wait 8 more months. Thanks!
14 CFR Part 61.39 (a)(5) states that you can not take a checkride in the US until you are of age to hold the desired certificate.

(5) Meet the prescribed age requirement of this part for the issuance of the certificate or rating sought;

Sorry. I encourage you to take as many mock-checkrides as possible in the meantime.
Also, in addition to mock-checkrides. You can train for your instrument rating. 14 CFR Part 61.65 allows you to take a combined checkride or even back-to-back private and instrument checkrides.
§61.65 Instrument rating requirements.
(a) General. A person who applies for an instrument rating must:
(1) Hold at least a current private pilot certificate, or be concurrently applying for a private pilot certificate, with an airplane, helicopter, or powered-lift rating appropriate to the instrument rating sought;