NYSTCE Computer Science case studies
NYSTCE Computer Science · Put your knowledge to work in context.
Computer Science (test code 194) is a New York State Teacher Certification Examination Content Specialty Test, listed on the official NYSTCE test table alongside the other Content Specialty Tests. Candidates who need it are typically seeking New York certification to teach computer science, and the test is meant to let them demonstrate content knowledge in the field rather than general pedagogy. The official program pages state that a final framework for the new 194 Computer Science test became available on 9/29/22, a study guide followed on 4/9/25, and a practice test on 10/6/25; registration opened 8/26/25. The framework is the authoritative description of what the exam covers, so download it first and map its subareas to your coursework and teaching experience. The NYSTCE Computer Science case studies are 5 cases and about 2,298 words.
1Recursive Binary Search That Skips the Last Candidate
Rivera's AP Computer Science class is debugging a recursive binary-search method for a sorted array of 12 integers. The method should return the index of a target or -1.
526 words, about 3 min2DHCP Pool Exhaustion in a Shared School Lab
A K-12 lab has 24 student desktops, 2 teacher laptops, and 6 tablets on one VLAN, 192.168.10.0/24. The DHCP server pool is 192.168.10.100 through 192.168.10.120 inclusive, with 8-hour leases.
431 words, about 2 min3Choosing a Lookup Structure for a 5,000-Record Gradebook
A teacher-built grading application stores 5,000 student records in an unsorted array. A lookup by student ID scans from index 0 until it finds the ID.
467 words, about 2 min4Responsible Disclosure After Viewing Another Student's Records
During lunch, a high-school student in the cybersecurity club logs into the school portal and notices the URL https://portal.example.edu/grades?student id=1024 . The student changes the value to 1025 and sees another student's schedule and grades.
435 words, about 2 min5Sign Extension and Masking in an 8-Bit Motor Command
A robotics club uses one 8-bit byte per motor command. Bits 7-4 hold motor ID (0-15); bits 3-0 hold a signed 4-bit two's complement speed in the range -8 to 7.
439 words, about 2 min