"少数几个学生" 的英文表达是 "a few students"。
"A few" 是一个固定的表达方式，用来表示 "少数的、几个的"。例如：
I only have a few friends. (我只有几个朋友。)
We only need a few more ingredients to finish the recipe. (我们只需要再加入几个成分就可以完成这道菜谱了。)
下面是一些使用 "a few students" 的英文例句，以及它们的中文翻译：
There are only a few students left in the classroom. (教室里只剩下几个学生了。)
A few students are absent today. (今天有几个学生缺席。)
I've noticed that a few students have been struggpng with the material. (我注意到有几个学生在学习这些材料时遇到了困难。)