The phrase "at one class" is correct and usable in written English.
It can be used when referring to a specific class or session in an educational context.
Example: "I learned a lot about teamwork and collaboration at one class last semester."
Alternatives: "during a class" or "in a class".
At one class, a discussion on financial structuring even sidetracked to obstetricians and massage therapy.
At one class I attended last weekend, the svelte dominatrix of a yoga teacher marched around class wearing a Madonna esque headset-microphone combo, her voice drowning the room no matter where she stood.
In class, people from every level sit right next to our directors and the president of the company". At one class, the sixth session of a nine-week course called "Lighting and Motion Picture Capture," the students represented an intriguing cross-section of Pixar employees: a post-production software engineer, a set dresser, a marketer, even a company chef, Luigi Passalacqua.
"In Romania, sex ed is sometimes taught in schools at one class, from one optional subject the children's parents can sign them up for called 'Health Education,'" VICE Romania's Mihai Popescu explained.
We don't have all of the answers, and we have our own doubts about the FCC's methodology, but what we found exposes a fundamental truth -- Verizon and the other phone companies appear to have succeeded in convincing people to only look at one class of lines, POTS, and not the tens of millions of lines that are in service and are classified as part of the state utility networks.
Model MD (model D in [ 33]) allows selective pressure at one class of sites to differ in different clades of the phylogeny.
Only five of the 18 international universities on the list, or 27%, offer at least one class on blockchain or cryptocurrency.
Last year, elementary schools in Illinois were required to offer at least one class on cursive.
Undergraduate and graduate students: At least one class on Latin American culture, history or society is preferred.
Another study found that 86% of plans place all medicines in at least one class on the highest cost-sharing tier.
Responders were defined as an improvement of at least one class on NYHA classification.
