Lanark Grammar School is a secondary school in Lanark, Scotland.
 It was founded in 1183, and celebrated its octocentenary in 1983, including a visit by The Princess Anne.
 The school draws its pupils from the town of Lanark and many villages in the local area, including Douglas, Carstairs, Forth and Glespin.
Bridgnorth Endowed School is a coeducational secondary school and sixth form with academy status, located in the market town of Bridgnorth in the rural county of Shropshire, England.
 Founded in 1503, The Endowed School is a state school and is a specialist Technology College.
 The age range of the School is 11–18 years.
 It was previously known as the Bridgnorth Grammar School, and the school celebrated the 500th anniversary of its foundation in 2003.
 Former pupils include Professor Peter Bullock, the inspirational soil scientist who was a member of the Intergovernmental Panel on Climate Change (IPCC).
Cleghorn is a small village in South Lanarkshire, Scotland.
 It is north-east of the town of Lanark and is in the catchment area of Lanark Grammar School.
Anne, Princess Royal, {'1': ", '2': ", '3': ", '4': "} (Anne Elizabeth Alice Louise; born 15 August 1950) is the second child and only daughter of Queen Elizabeth II and Prince Philip, Duke of Edinburgh.
 At the time of her birth, she was third in the line of succession to the British throne, behind her mother – then Princess Elizabeth – and elder brother, Charles.
 She rose to second after her mother's accession, but is currently 12th in line.
Holcombe Grammar School (formally Chatham Grammar School for Boys) is a grammar school with academy status in Chatham, Kent, England.
 It is a selective school.
 From the 2017-18 academic year, the school planned to become co-educational and remain selective in the lower school.
 This was blocked - and later approved - by the Department for Education with co-educational admission desired for the 2018/19 school year.
 The school has changed name in advance of becoming co-educational and plans to change all references from "Chatham Grammar School for Boys" to "Holcombe Grammar School" over academic year 2016/17.
Royal Forest of Dean College was a college of further education located close to the town of Coleford, in the Forest of Dean in west Gloucestershire.
 It was dissolved by government order as of 31 January 2011 in order to be merged to Gloucestershire College.
 Together with its secondary site at Mitcheldean, and around 30 further outreach sites, the college served a mainly rural area.
 The college offered a range of courses from A-levels and was associated with University of Gloucestershire for higher education to Master's degrees.
 East Dean Grammar School of Cinderford, formed in 1929, merged with Bells Grammar School of Coleford in 1968 to form the Royal Forest of Dean Grammar School on a new site.
 In 1985, the grammar school was split into a comprehensive school and the college.
 A 2009 Ofsted inspection rated the school with a Grade 2 (good).
Trinity Grammar School Preparatory School is a campus of Trinity Grammar School, which is used for the education of students from Pre-Kindergarten through to Year 6.
 While they serve to educate the same age group of boys, this is separate from Trinity Grammar School Junior School, which is found in Summer Hill, whereas the Preparatory School is based in Strathfield.
 The School is located on the corner of Llandilo Avenue and the Boulevard.
 The Preparatory School now houses over 600 students, which are kept together on the one campus, unlike the Junior School, which has its infants department in Lewisham and its primary facilities in Summer Hill.
 Unlike the other Trinity Grammar School campuses, boarders are not usually taught at the Preparatory School, as the Boarding House is located a short distance from the Junior School in Summer Hill.
 In the past, Lauriston was used as a separate boarding house for the Strathfield Campus.
Maricourt Catholic School, in Maghull, Merseyside, United Kingdom, formerly "Mater Misericordiae Grammar School", is one of two Roman Catholic secondary schools administered by the Sisters of Mercy in Merseyside, the other being Broughton Hall, West Derby.
 The school celebrated its 50th anniversary in 2007 with the new headmaster Brendan McLoughlin MA.
 The former headteacher Sister Mary Teresa RSM BSc was the last of the Sisters to be Head the school and ceased her duties in 2007, opting to remain as deputy chair of the Board of Governors.
 The school offers both GCSE and Advanced Level qualifications for male and female students.
Eton Fives, a derivative of the British game of Fives, is a handball game, similar to Rugby Fives, played as doubles in a three-sided court.
 The object is to force the other team to fail to hit the ball 'up' off the front wall, using any variety of wall or ledge combinations as long as the ball is played 'up' before it bounces twice.
 Eton Fives is an uncommon sport, with only a few courts, most of them as part of the facilities of the public schools in the United Kingdom (as well as Rydal Penrhos, Wolverhampton Grammar School, St Olave's Grammar School, St Bartholomew's School, Newbury and St Saviour's Grammar School, the Royal Grammar School, High Wycombe, King Edward's School, Birmingham, Queen Elizabeth's School for Boys, City of Norwich School and Oswestry School), Wrekin College and Queen Elizabeth's Grammar School, Ashbourne; consequently, it has been primarily the preserve of their students and alumni.
 The only known court to be owned by a private individual in the UK is on the Torry Hill estate in Kent.
In 2010 The Lodge School celebrated its 265th anniversary as an institution of learning in Barbados.
 This extended period has not been continuous, as the school has closed and reopened four times during these two and a half centuries.
 The school has been known as Codrington College, The College, The Mansion School, the Codrington Grammar School, The Codrington Foundation School, Codrington Collegiate School, Codrington Endowed School, Codrington Lodge Grammar School and The Lodge Collegiate School.
 By 1882 the school's name had finally settled on The Lodge School, after the Chaplain's Lodge where some of the early classes were undertaken.

Question: Lanark Grammar School celebrated its octocentenary in 1983, including a visit by Princess Royal born in which year ?
Answer: 1950