Grades Collapsed after Junior Year. Need help with chancing my colleges

<p>So basically second semester of my junior year completely wrecked my gpa and this is how my course work goes:
Sophomore Year:
1st semester:
Spanish 2, B
World History, A
PreCalc Honors, B
Physics Honors, B
Java, B
Lit, B</p>

<p>2nd semester:
Spanish 2, B
World History, A
PreCalc Honors, B
Physics Honors, C
Java, A
Lit, B</p>

<p>Junior Year:
1st Semester:
Spanish 3, B
Lit Honors, A
AP Computer Science, B
US History, A
AP Calculus BC, B
Engineering Tech, A
Chem Honors, B</p>

<p>2nd Semester:
Spanish 3, C
Lit Honors, B
AP Computer Science, B
US History, A
AP Calculus BC, B
Engineering Tech, A
Chem Honors, C</p>

<p>My Unweigted GPA for sophomore and junior year is around a 3.3 and weighted is a 3.65. From freshman to Junior year my unweigted is 3.35 and my weighted is 3.57.</p>

<p>My SAT score is a 2070 and i have a 800 on math level 2 and I am currently waiting for my sat 2 chem which I think i may have gotten an 800 on. I have recieved a 5 on all my ap tests so far except a 4 on physics and the AP World history exam. I am taking the ACT soon and believe I can get a 36 on it based on my diags. I have strong extracurriculars including working at a paid job in robotics. Please chance me for the following colleges for the major Computer Science:<br>
University of South California, Santa Clara University, San Jose State, University of Texas, Austin, University of Illinois at Urbana Champaign, Purdue University, University of Washington, University of Michigan, Georgia Institute of Technology, and the Cal Poly's along with the UC's.
Thank you so much I am currently freaking out.</p>

<p>Based on your posted grades, your CSU/UC GPA is about a 3.5. SAT score is good but a higher ACT would better your chances. Unfortunately for the most of the UC’s, GPA is weighed more heavily than Test scores.
CPP/UCM/UCR/UCSC/Santa Clara: Match
Purdue/SJSU: High Match (Calculate your Eligibility index which is (GPA x 800) + (SAT Math + Critical Reading). For CS this year at SJSU, the EI was 4500.
SLO/UCI/UCD/UCSB: Low Reach
UCB/UCLA/UW: Reach
I am not familiar enough with the other schools to chance you.<br>
Do you have a good explanation for your lower grades??? If so, you could address it in your essays which would increase your chances. CS is very competitive. My younger son had a 3.73 GPA (not great) and ACT of 31 and was accepted into UCR/SJSU (Undeclared)/SDSU/CPP/CSULB/CSUF but rejected from SLO/UCD/UCI/UCSB.
Good Luck.</p>