4A: Bar graph showing the percentage of 2008 Oklahoma EXPLORE-, PLAN- and ACT-tested students likely to be ready for college-level work. EXPLORE. English: 58%. Algebra: 28%. Social Science: 39%. Biology: 9%. Students Meeting All Benchmarks: 7%. PLAN. English: 61%. Algebra: 23%. Social Science: 43%. Biology: 16%. Students Meeting All Benchmarks: 11%. ACT. English: 68%. Algebra: 32%. Social Science: 52%. Biology: 24%. Students Meeting All Benchmarks: 17%. Source: 2008 ACE College Readiness Report.