Английский. Есть ли ошибки в тексте? Если да, то укажите их, пожалуйста.

This year I finished school ( не надо говорить public, это слово имеет разный смысл в британском и американском английском. Вы имеете в виду частную школу?) . I went to school in downtown Moscow, near the Novokuznetskaya metro station . (Чтобы избежать заминки с согласованием времен, которое здесь не обязательно, но может вызвать вопросы, можно объединить предложения) .
I entered school in 2000 when I was six (years old). There were only basic subjects in elementary school : THE Russian language, mathematics, literature, history of Moscow, and physical education. In high school new subjects were added(порядок слов - подлежащее предшествует сказуемому) : world history, English, social studies, chemistry and physics. In the last two years optional courses on sociology and economy were added .
At my school a lot of time was devoted to history and mathematics, but very little attention was given to English. So I don't know English very well. I hope that at college (at the university) I shall/will be able to improve my knowledge of English.
History and mathematics were my favourite subjects. I participated in olympiads (competitions?) in these subjects.
I passed exams in the Russian language, mathematics and social studies for entering the university. Mathematics was the most difficult subject for me. It took me a long time to prepare for the maths exam.
At school I liked the teachers, optional courses, and excursions. But I didn’t like the timetable. Classes finished early on weekdays, so we studied on Saturday. Despite this, I have the most pleasant memories of school life.

I have finished school studing recently. graduated from - это про вузы

I studied in А public school. My school WAS ( согласуем время) located in THE downtown OF Moscow, near Novokuznetskaya metro station.
In high school new subjects were added....порядок слов: подлежащее перед сказуемым.
.The last two years The optional courses on sociology and economICS WERE added. - потому что есть указание на прошедшее время ( без предлога, пж.)

Столько ошибок, что надо просто снова писать, неохота...

есть. почти в каждом предложении. текст написан по-русски с использованием английских слов. в основном ошибки в речевых оборотах. мысль ты свою донес, но ошибки всеравно там.