1. Summarise The Main Points
Reread the topic sentences of your body paragraphs and then put these into a single sentence using different vocabulary or paraphrasing where possible. For example:
University graduates possess a deeper knowledge which can improve their work ethic and enable them to be more effective employees, where as those with experience only, may require additional training later in their careers.
To write a sentence like this you are probably going to have to write a complex sentence that includes at least two main clauses or parts. This can easily be done with conjunctions, such as: and, but, yet, although, however, even though and so on.
2. State Or Restate Your Opinion If Required
If the question asks for your opinion then you should have already included it in your introduction. In which case you must repeat this same opinion using different words and phrases, this is common in 'Opinion', and 'Discussion and Opinion' essays.
If you are not required to offer your opinion, as in some Discussion essays, then you may add one in the conclusion only, although this is optional.
For Situation: Problem and Solution essays, you will give your opinion by saying who is responsible for solving the problems rather than giving your general opinion about the topic.
For Situation: Two Part/Direct question essays, there is no need to add your opinion, you will simply summarise your topic sentences.
Here is an example of a restatement of an opinion:
I remain of the firm opinion that completing a university education is of greater importance than time spent gaining hands on experience.
Overall then, a full conclusion may look like this: