The Union County Vocational-Technical High School ("UCTech") is a full-time vocational public high school, located in Scotch Plains in Union County, in the U.S. state of New Jersey. This school serves students in ninth through twelfth grades from across Union county as a career academy on the Union County Vocational Technical Schools Campus, which also includes the Union County Academy for Allied Health Sciences, Academy for Information Technology, Union County Magnet High School and the Academy for Performing Arts. The school is accredited until January 2031 by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools.

As of the 2023–24 school year, the school had an enrollment of 507 students and 23.8 classroom teachers (on an FTE basis), for a student–teacher ratio of 21.3:1. There were 40 students (7.9% of enrollment) eligible for free lunch and 6 (1.2% of students) eligible for reduced-cost lunch.

UCTech was recognized as a National Blue Ribbon School of Excellence by the United States Department of Education in the 2011-12 school year.

In its listing of "America's Best High Schools 2016", the school was ranked 189th out of 500 best high schools in the country; it was ranked 29th among all high schools in New Jersey.

Schooldigger.com ranked the school tied for 18th out of 381 public high schools statewide in its 2011 rankings (a decrease of 6 positions from the 2010 ranking) which were based on the combined percentage of students classified as proficient or above proficient on the mathematics (98.3%) and language arts literacy (100.0%) components of the High School Proficiency Assessment (HSPA).

As with all schools on the UCVTS campus classes run on a block scheduling system. Two revolving days (A/B) are broken up into five blocks (1/2, 3/4, 5/6, 7/8, 9/10). Each block is 83 minutes in length, with the exception of 5/6. Depending on the student's grade level, periods 5 and 6 are Co-Curricular and the Lunch period, in some order.

UCTech offers six career academies, which are distinguished by small cohorts of students, approximately 25 students per academy class that pursue vocational education within a specific field. These Academies are colloquially referred to by either an acronym or the most notable term from their name. The academies are as follows:

• Academy for Clinical Care Sciences (Clinical)
• Academy of Law & Justice (ALJ)
• Exercise Physiology and Related Sciences (Ex Phys.)
• School of Design (Design)
• School of Sustainable Sciences (Sustainable)
• Teacher Education Academy (TEA)

The School of Design, School of Sustainable Sciences, and Teacher Education Academy spend their 12th grade year at Kean University, focusing on their distinct career-focused academics.

• Union County Vocational-Technical High School website
• School Performance Report for Union County Vocational-Technical High School, New Jersey Department of Education
• Data for the Union County Vocational-Technical High School, National Center for Education Statistics
• Academic Program Guide