I grew up in the U.S. My first language is English, all my life I’ve been there. In 2011 I went back to Mexico because my mother had wanted to go back. I suffered a lot and spent 3 years there in Mexico. I was bullied for not knowing a lot of Spanish and having an accent. I obviously with time got use to it. But the problem was that I wanted to go back to the U.S with my father ( who is undocumented) and brother (who was born in the U.S) but I couldn’t because I didn’t have a visa. So we waited. 3 years. On November 2014 I got an interview with the visa & they gave it to me. That following month I had the privilege to go to the U.S again and see my dad. I wanted to continue my school in U.S which I’m doing now. I saw all my old friends and they couldn’t believe I came back. But now here comes the bad part. I’m a senior but I can’t graduate because my credits aren’t enough. I can’t apply for fanacial college aid because I didn’t attend a U.S highschool for 3 years. I can’t apply for dream act because I left the U.S for 3 years. It doesn’t seem fair to me. All this happened because of my parents, all this isn’t my fault. What can I do ? What’s my next step?
What you can do is credit recovery, I’m pretty sure your school will offer opportunities to make up these credits. Also about the whole financial aid, if you aren’t a citizen you aren’t eligible for it period. I assume you aren’t since you’re trying to apply for DACA. I am a current DACA recipient and I’ve done quite a bit of research and what you can possibly do is enter scholarships such as Quest Bridge, Posse Foundation, Hispanic Scholarship Fund. Quest Bridge and Posse both offer up to full ride scholarships to top tier schools regardless of your citizenship situation. If you apply to the Ivys you’re likely to get institutional financial aid but the Ivys are very competitive and only a few scholarships are available for international students, but as a minority you have a better chance than another person. Also your current situation is something to write about during admissions to give the schools a sense of the obstacles you’ve gone through but haven’t managed to put you down. You might think of it as something that’s gone to put you behind when in some cases it may actually help you get where you want to be. The key is to have spot on scores on your sat or act and subject tests and to express your situtaion ans your strengths in your college essays. It isn’t your fault you had to leave the country but don’t dwell on it. Move forward and do as much as you possibly can at this point in time. I feel your struggle for admissions for me will be tricky as well since I’m undocumented. Hope this helped 
And sorry its months late!