Hanafi
The sources give no view for it here.
هيئة المحدود عند الجلد
هل يُجلد المحدود قاعدا أم قائما؟
Each school’s answer
In our wordsHanafi
Not stated in the sources
Maliki
Not stated in the sources
Shafi'i
Not stated in the sources
Hanbali
Not stated in the sources
The texts
مسألة: يضرب قاعدا ولا يقام، خلافا لمن قال إنه يقام؛ لقوله تعالى: "فاجلدوهم" ولم يأمر بأن يقاموا، ولأنه شخص وجب حده فلم يستقم عليه القيام كالمرأة.
«الإشراف», al-Qadi Abd al-Wahhab p. 867
From the schools’ own books
Maliki
The sources give no view for it here.
Shafi'i
The sources give no view for it here.
Hanbali
The sources give no view for it here.
What is «in our words» is our standard wording; the books’ texts stay as they are.