Do I Need to Submit the High School Record for Applying to University of Iowa?

Yes. University of Iowa requires to submit the high school record to its applicants. The next table summarizes the application requirements at University of Iowa.

Application Requirements
University of Iowa
SAT Test Score	✓
ACT Test Score	✓
High School GPA	✔
High School Rank	✓
High School Record	✔
Completion Of College-preparatory Program	✔
Recommendations	✓
Formal Demonstration Of Competencies	✓
TOEFL (Test Of English As A Foreign Language)	✔
Other Test (Wonderlic, WISC-III, Etc.)	✗
✔ Required △ Considered (not Required) ✓ Recommended ✗ Neither Required nor Recommended