Sentence:  Organise the students into small groups. Send a letter home to the parents stating that the science lesson will involve students eating a small amount of <WSD>lollies</WSD>. Check which students are allowed to eat <WSD>lollies</WSD>. Students with diabetes will only be able to observe or they could bring their own ‘special' sweets from home. 
Meaning of the word marked with <WSD> tags:  Any confection made from sugar, or high in sugar content; a sweet, a piece of candy.