OSAT Computer Science (OK181) case studies
OSAT Computer Science (OK181) · Put your knowledge to work in context.
The OSAT Computer Science (OK181) is a subject-area assessment used in Oklahoma's teacher certification pathway for candidates who want to teach computer science at the secondary level. It is typically taken by people completing an educator preparation program, career-changers with industry computing experience, and certified teachers adding a computer science endorsement. The test is delivered by computer at a testing center and is built around the state's subject-area framework, so it samples breadth rather than depth in any single language or tool. Expect content spanning computational thinking and foundational concepts, programming and algorithm design, data structures, computer systems, networking and security, data management and analysis, the social and ethical impacts of computing, and the pedagogy of teaching and assessing computer science. The OSAT Computer Science (OK181) case studies are 5 cases and about 3,370 words.
1Binary Fluency or Binary Understanding?
Alvarez teaches a 9th-grade introduction to computer science course with 28 students. On a pre-assessment, 22 students could convert an 8-bit binary number such as 11010110 to decimal, but only 6 could explain why an 8-bit unsigned value cannot represent 256.
658 words, about 3 min2The Word Count That Crawled
Okafor teaches a second-year programming course with 26 students. The assignment asks students to read a 50,000-word text file and produce the frequency of each word.
690 words, about 3 min3The /27 That Wasn't Enough
A high school opens a new computer lab with 30 student Chromebooks, one teacher laptop, one network printer, one wireless access point, and one lab server. The district network office assigns the lab the subnet 192.168.20.0/27.
673 words, about 3 min4The Attendance Camera
A district committee is considering a facial-recognition attendance system for a high school with 1,100 students. The vendor claims 99.2% overall accuracy and says the system will save 12 minutes per class in roll-taking.
669 words, about 3 min5The 62% Item
Chen teaches a 10th-grade computer science course with 28 students. On a quiz about parameter passing, item 7 shows a method that takes an array and modifies one element.
680 words, about 3 min