(SBA) Sergeant Bluff Advocate
(SBA) - Sergeant Bluff-Luton High School has earned statewide recognition after being named one of Iowa’s Top 50 schools on the 2025 Iowa AP Index, marking a historic milestone for the district. Based on Advanced Placement exam data from 2024, SBL High School ranked 42nd overall with an AP Index score of 0.77, placing it among the leading schools in the state for student participation in college-level coursework.
Superintendent Chad Janzen said the recognition reflects years of effort by students and staff. He noted that this is the first time Sergeant Bluff-Luton has appeared on the prestigious list, calling it a testament to the dedication, academic ambition, and commitment to excellence demonstrated throughout the school community. Janzen added that being named to the AP Index shows SBL students are not only college-ready but are also thriving in rigorous academic environments.
The Iowa AP Index is designed to measure access to and participation in Advanced Placement opportunities across schools of all sizes. It is calculated by dividing the total number of AP exams taken by students by the number of graduating seniors, allowing for fair comparisons between large and small schools. An index score of 1.00 indicates that the number of AP exams taken equals the number of graduates. Higher scores suggest a strong culture of participation and support for advanced coursework.
The Advanced Placement program, overseen by the College Board, allows high school students to take college-level courses and exams in a wide range of subjects. In May 2024, more than 2.6 million students nationwide took approximately 5.7 million AP exams across 40 subjects. Students who earn qualifying scores can receive college credit or advanced placement at thousands of colleges and universities. A score of 5 represents top-level college work, while many institutions also grant credit or placement for scores of 3 or higher.
Although the AP program began on the East Coast in the mid-1950s and has been described by former U.S. Education Secretary Richard Riley as the “gold standard” of academic rigor, Iowa’s participation historically lagged behind much of the nation. This was due in part to the state’s large rural population. However, AP participation in Iowa has grown substantially since 2001, with more schools offering AP courses and more students taking exams.
Despite the growth in participation, Iowa students continue to perform well. In 2024, 70.4 percent of AP exams taken by Iowa students earned scores of 3 or higher, exceeding the national average of 65 percent. The state also saw a 2 percent increase in AP availability between the 2022–2023 and 2023–2024 school years, with 40 percent of Iowa schools now offering at least one AP course.
Statewide, the overall Iowa AP Index for public high schools rose to 0.56 in 2025, up from 0.52 the previous year, indicating a continued rebound in participation following national declines during the COVID-19 pandemic. The index is based on 18,824 AP exams taken by students and 33,539 graduating seniors during the 2023–2024 school year. In total, 190 Iowa schools had at least one student take an AP exam in 2024.
Research has consistently shown the benefits of AP participation. Studies indicate that students who take AP courses and exams tend to earn higher college entrance exam scores, achieve higher college GPAs, and outperform non-AP peers of similar academic ability once enrolled in college. AP coursework also helps students stand out in the college admissions process, qualify for scholarships, and save time and money by earning credits before graduation.
For Sergeant Bluff-Luton High School, the Top 50 ranking represents both recognition of past success and motivation for the future. District leaders say the achievement underscores the school’s growing academic culture and its commitment to expanding opportunities that prepare students for college and beyond.
