In the US, schooling is free from grade 1 to grade 12, and school costs are paid by the cities and towns.
在美国，从小学一年级到12年级(高三)是免费的，学校的费用由所在的城市、城镇支付。
Furthermore, the cost of Microsoft Windows can prove beyond the means of many institutions, especially in K-12 (kindergarten to grade 12) and emerging markets.
此外，MicrosoftWindows的费用可能超过许多机构的财力，尤其是在K - 12(幼儿园到12年级)和新兴市场。
In the us we have free compulsory public education for all children from grade 1 to grade 12. Children must stay in school through grade 12, or at least until they are 16.
美国对小学一年级到12年级的孩子实行强制性义务教育，孩子们必须在学校里读完12年，或者至少要到16岁。
I worked as a mentor at York University in Toronto for three years. I also taught grade 12 English and grade 12 Economics for two years in a private high-school in north Toronto.
我曾担任多伦多约克大学的导师三年，也曾在多伦多北部一个私立高中教12年级英语和12年级经济学两年。
Today I am very glad to be here and represent Grade 12 students to give you a speech.
今天我非常荣幸，代表12年级的同学在这里为大家做一个演讲。
Among these 4 courses at the Grade 12 level, one must be Language Arts 12, and the other 3 could be required or elective courses.
在12年级的4门课中，有一门必须是语言文学，另外三门可以是必修或选修课。
Each student should know where he or she will apply by the beginning of Grade 12. Make sure to consider these things: cost, size, quality, rank, location, climate, etc.
每个学生在高三开学之前就要知道自己想到哪个大学，可以把花费，学校规模，教学质量，排名，地理位置，天气情况等因素考虑进去。
Each student should know where he or she will apply by the beginning of Grade 12. Make sure to consider these things: cost, size, quality, rank, location, climate, etc.
每个学生在高三开学之前就要知道自己想到哪个大学，可以把花费，学校规模，教学质量，排名，地理位置，天气情况等因素考虑进去。
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