Months of tense emails and kitchen-table problem solving have ended with a do-over at Mission San Jose High School, where Fremont Unified School District has agreed to regrade an honors chemistry final that parents say broke the basic rules of chemistry.
At the center of the dispute: a single test question about what you get when you burn firewood and how you know the reaction is exothermic. The multiple-choice item pitted “heat and light” against “cellulose and oxygen” as the key indicators, and students were told the cellulose-and-oxygen option was correct. This week, the teacher told students the exam would be regraded.
The challenge was spearheaded by Fremont parent Shilpa Viswanathan, who, along with her family, combed through the spring honors chemistry final and flagged six answers they believed were incorrectly marked. In Question 30, students saw four possible answers. One choice stated that cellulose and oxygen products show an endothermic reaction, while another said heat and light products indicate an exothermic reaction. The teacher had marked the cellulose/oxygen option as correct; the student had picked heat and light. According to the San Francisco Chronicle, after months of back-and-forth and formal review, the teacher eventually emailed the class, “I will re-grade your exam.”
Why this chemistry question blew up
Chemistry references define combustion as an exothermic reaction that uses up oxygen and typically releases energy as heat and light while forming oxides such as carbon dioxide and water, not free oxygen or leftover cellulose, per Britannica. That basic definition is what set off alarms for parents and science educators, who said the test item was either flat-out wrong or so unclear that it misled students.
In a community where families scrutinize science education like a lab report, the dust-up quickly turned into a broader debate over the accuracy and vetting of classroom materials.
Publisher, district and the answer key mix-up
Fremont Unified initially backed the original grading. But after a formal complaint and exchanges with the company that wrote the exam, the teacher ultimately changed three of the six disputed answers, and district officials agreed to regrade the test, according to the Chronicle.
The test publisher told the district that more than one lettered answer key existed for the exam. The letter attached to the correct response could differ, the publisher said, but the actual correct content remained the same. That clarification helped the district sort out which choices were supposed to be marked right.
Meanwhile, Fremont Unified’s website shows a school board meeting scheduled this week, where parents were expected to air broader academic concerns. The agenda is posted on the Fremont Unified site.
What happens after the regrade
Parents involved say the fight was never just about one test score. For them, it is about keeping scientific accuracy front and center in classrooms and making sure errors get fixed quickly.
With the regrade now in motion, the controversy has left Fremont residents wrestling with a bigger question: how schools should catch mistakes in test materials and what safeguards should be in place when high-stakes exams go wrong.
