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In Ireland, grinds are private tuition; a major industry in Ireland, particularly at secondary school level.
"Grinds" is a Hiberno-English term which is used variously to refer to both the lesson ("I'd a maths grind last night") and the teacher ("My maths grind came over last night"), although the latter usage is less common. It is generally used in the plural ("I do maths grinds").
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Ireland was traditionally an agricultural and farming community so perhaps this is where the word ‘grind’ started. Grinding stones were used to produce flour by hand in ancient agriculture and evolved along with the development of different kinds of mills. From hand quern mills to grist mills powered by water, wind or steam, grinding stones remained an essential tool until the end of the 19th century, when roller mills using metal rolls to grind grain were developed. The term ‘keep your nose to the grindstone’ was commonly used to mean ‘apply yourself conscientiously to your work’.‘To grind’ in education generally means to ‘instil or teach by persistent repetition’. Charles Dickens referred to Mr Gradgrind in his novel Hard Times.
Grinds in Ireland are a major component of educational life. Many Irish students will have "grinds" before sitting either one or both of the two major state exams, the Junior Certificate and the Leaving Certificate. Grinds are a multimillion-euro industry in Ireland.
In recent years, the Office of the Revenue Commissioners has been investigating a perceived failure of some teachers to declare extra income from giving grinds for tax purposes. The teachers' union ASTI has denied that this is a widespread problem.
The terms grinds had also become popular at College/University level. The cost of grinds varies per subject area. There is a grinds barometer available on a popular website advertising Grinds www.grinds.ie 
Some schools such as Ashfield College, Bruce College, Institute of Education, Leinster Senior College and Yeats College which offer the Leaving Certificate as a single year (Repeat) course are called Grind Schools.
- "625points" - Notes from past students who accomplished the top possible grades in the Leaving Cert
- "StudyNotes.ie" - Free Online Grinds Notes
- "GrindsCentre.com" - Grinds in Ireland, Leaving Cert and College grinds. Database of students and tutors.
- "The Dublin School of Grinds" - Grinds for Leaving Cert and Junior Cert students.
- "Ashfield College Grinds" - Evening & Weekend Grinds for Leaving & Junior Cert.
- "Bruce College Grinds"
- "Grinds.Biz" - Junior Cert, Leaving Cert and College Grinds.
- "24-7tutorials.com" at 24-7tutorials.com
- "Grinds.ie" at Grinds.ie
- "Grinds Ireland" at Grinds-Ireland.com
- "mocks.ie" - Leaving and Junior Cert Study Website.
- "Hewwitt College" - Grinds in Cork.
- "English Irish Maths Grinds" at Irish-Grinds.com
- "Find Grinds" list of secondary level grinds teachers in Ireland.
- "Private Tuition" at Morehampton Academy in Donnybrook.
- "Dublin Mathematics School" University Maths Grinds.
- "Galway Maths Grinds" Second level maths grinds
- "College Grinds Cork" College Grinds in Cork.
- "VideoGrinds.ie" Online Video Grinds for Junior Cert Students.