<p>The schools you posted have not evinced a preference for either exam; they simply require one or the other. You should decide whether or not you want to take the SAT or the ACT, as you may be able to post a stronger performance on one test than the other. If you can prefer, you can take both, and then simply send in the better score.</p>
<p>Stanford: [Testing</a> Requirements : Stanford University](<a href=“http://www.stanford.edu/dept/uga/application/freshman/testing.html]Testing”>http://www.stanford.edu/dept/uga/application/freshman/testing.html)
CalTech: [Freshman</a> Applicants - Caltech Caltech Undergraduate Admissions](<a href=“http://www.admissions.caltech.edu/applying/freshman]Freshman”>http://www.admissions.caltech.edu/applying/freshman)
UCLA: [UC</a> Admission Requirements - Freshman - UCLA Undergraduate Admissions](<a href=“http://www.admissions.ucla.edu/prospect/adm_fr/fracadrq.htm]UC”>http://www.admissions.ucla.edu/prospect/adm_fr/fracadrq.htm)
UC Davis: [UC</a> Davis : Examination Requirement](<a href=“http://admissions.ucdavis.edu/admissions/fr_exam_reqt.cfm]UC”>Undergraduate Admissions)
UC Berkeley: [General</a> Catalog - Undergraduate Education - Applying for Admission](<a href=“http://catalog.berkeley.edu/undergrad/admission.html]General”>http://catalog.berkeley.edu/undergrad/admission.html)
UCSD: [UC</a> San Diego Comprehensive Review Admission Process: Freshman Selection, Fall 2010](<a href=“http://www.ucsd.edu/prospective-students/freshmen/eval-process.html]UC”>http://www.ucsd.edu/prospective-students/freshmen/eval-process.html)
USC: [FAQs</a> - USC Undergraduate Admission](<a href=“http://www.usc.edu/admission/undergraduate/faq/admission_standards.html]FAQs”>http://www.usc.edu/admission/undergraduate/faq/admission_standards.html)
USCB:[UCSB</a> Admissions](<a href=“http://www.admissions.ucsb.edu/selectionprocess.asp?section=selectionprocess&subsection=eligibility&selectiontype=prospective_freshman]UCSB”>http://www.admissions.ucsb.edu/selectionprocess.asp?section=selectionprocess&subsection=eligibility&selectiontype=prospective_freshman)</p>
<p>As you can see, all of the schools have indicated that they will accept either the SAT or the ACT.</p>