If you mean grammar and spelling, I’ll help!
“My School is small, so everybody knows each other. We have got 200 students and 30 teachers in my school. The lessons there are interesting, and my teachers are helpful.
The building got renovated with a new main entrance, computer lab and gym. Unfortunately, the chemistry lab lacks equipment and did not get renovated.
The corridors and classrooms in my School are tidy and colourful! I like my School because it is a friendly place where I feel safe.”
Okay! So you were missing a few commas and did not capitalize School. School is a place, and therefore a noun (person place or thing).
I gave one of your sentences an exclamation mark (!) because I felt it fit the sentence! Feel free to change it to a period (.) If you want.
I gave you some new vocabulary just to blow away your teacher! Thank me later :). I made sure to stick to your example though!
Great job! Good luck.
The most useful resource to help someone to correct an awkward sentence structure is C) Artful Sentences.
<em>Artful Sentences </em>is a book written by Virginia Tufte for lovers of language.<u> The text contains basic information about syntax as well as an analysis of different sentences and tips to write good sentences</u>. Moreover, this book also explains what is the purpose of using short sentences and long sentences and when they should be used. Furthermore, it discusses other topics, such as cohesion and parallelism. Therefore<em>,</em><em><u> Artful Sentences</u></em>, <u>which focuses on how sentence patterns contribute to convey meaning, is the best option when it comes to correct an awkward sentence</u>.