If you are a university college or high school student you have probably benefited at some point in your life from having a coach - either as a member of a sports team or as a participant in an individual sport. No one questions the value of coaching in the world of sports whether it is at the peewee level or in the professional ranks. Athletic skills are developed and refined through coaching.
Having enough to say If your child is still stuck find out if they have read up enough on the topic. Some inertia with writing can be due to lack of knowledge. They will find writing so much easier if they spend another day or two reading more on the topic and gleaning some additional ideas. Try using a neutral sentence Suggest starting the essay with a neutral sentence: a sentence that merely states an interesting fact on the topic being written about. Heres one: Mozart was one of the most important Austrian composers of the eighteenth century. First sentences in essays dont need to be stellar - you just need to start!
Another aspect of essay writing which can be overlooked is that of presentation. The handwritten essay of previous centuries has largely been consigned to history. This certainly creates a level playing field for all academic writing to be presented neatly and legibly. However not all academic writing skills extend to a good knowledge of one of the standard word processing programs such as Microsoft Word. This is another area for essay services to provide coursework help.