How to separate paracetamol and caffeine? How do you separate paracetamol and caffeine using high-school laboratory equipment?

I was thinking about using the fact that paracetamol has a lower melting point (169 °C) compared to caffeine (around 235 °C): I would heat them up till paracetamol melts while caffeine is still solid. What I can't figure out is how you filter the caffeine from the liquid paracetamol (filter paper would burn at such a high temperature).

I would like to know how you do the filtration at high temperature; or, if you have a better method, please let me know!
The answer that my teachers had in mind was column chromatography. Essentially we use the van der Waals force of silicon gel to do an elution of the caffeine / paracetamol solution dissolved in water. 

More details can be found here:
http://www.chemguide.co.uk/analysis/chromatography/column.html