1959 – A pilot scheme was launched whereby a Police Cadet Corps (PCC) Unit was set up on an experimental basis. Bartley Secondary School formed the first unit with 30 cadets and a teacher officer.
2 Jun 1961 – The Police Cadet Corps Ordinance was enacted. All schools were given approval to set up PCC units. Siglap Secondary School and Serangoon Garden Government High School were the first to form such units.
1963 – The PCC and the National Cadet Corps (NCC) came under the administration of the Ministry of Education (MOE) with the Director of Education as the Director of Cadet Forces and in the following year, the PCC recruited girl cadets. Two new units were formed in the Raffles Girls' School and Sang Nila Utama Secondary School.
1968 – Formation signs were introduced for unit identity.
1969 – With the integration of PCC, Army, Air & Sea, the PCC was renamed National Cadet Corps (Police).
1970 – Cadet Inspectors' unit was formed from students in Pre-u classes.
1971 – The NCC (Police) was renamed National Police Cadet Corps (NPCC). The NPCC band was also formed in the same year.
1972 – The "grey and khaki" uniform was changed to the present all-blue.
1974 – The NPCC Council was established by an Act of Parliament.
1 Apr 1975 – The NPCC Council was inaugurated by the Minister for Education.
1976 – The NPCC Band recruited girl cadets.
1979 – The NPCC service medals and clasps were introduced for officers and a year later, Proficiency Badges for cadets were introduced.
1980 – This period of time saw many initiatives being introduced to the Corps: the proficiency badges were introduced in 1980 in the hope of generating greater interest and opening up avenues to challenge cadets to achieve and excel.
1982 – The NUS NPCC Unit was established in 1982 to allow ex-cadets to continue their involvement in the Corps. These ex-cadets are known as "Honorary Officers".
1983 – The NPCC Pledge and NPCC March were introduced in 1983 and 1984 respectively to nurture a distinct NPCC Culture.
1984 – The objectives of the Corps was modified in 1984 to reflect the intellectual dimension and national concerns while retaining the traditional emphases.
1987 – The NPCC Pulau Ubin Camp Site was officially declared open in 1987.
1991 – NTU NPCC Unit was established in 1991. In the same year, the training wing of NPCC HQ assisted in the training of police officers in campcraft who were scheduled to go on their first UN Peace Keeping Mission in Namibia.
1994 – The Corps came closer to realize its dream to develop an NPCC Camp that could accommodate 750 campers when the Urban Redevelopment Authority leased to it a 26-hectare piece of land in Pulau Ubin in 1994.
1996 – The NPCC Mission Statement and Core Beliefs were formulated and adopted in 1996 to root the Corps in a strong and purposeful philosophy.
1997 – The most prestigious of the NPCC Badges - the SPF-NPCC Badge - was unveiled in 1997 and was awarded to 10 cadets in that same year during the NPCC Day Parade.
Sept 2000 – The idea to explore the set-up of the NPCC (Sea) Unit first surfaced during a meeting on the progress of the new NPCC campsite at Pulau Ubin. The meeting involved Deputy Commissioner of Police, Chairman NPCC Council and Commandant NPCC.
27 Nov 2001 – NPCC council gave in-principle approval to start the NPCC (Sea) Unit in two schools namely; Anglo-Chinese School (Independent) and Springfield Secondary School.
January 2002 – The two schools initiated recruitment of cadets for the sea units.
20 April 2002 – The new NPCC Ceremonial Flag was launched during the NPCC Day Parade.
15 Jan 2003 – The two sea units were launched on together with the ground -breaking ceremony for the Loyang Regional Base.
2005 – Pioneer batch of Non-Commissioned Officers took over as the new leaders of the NPCC(Sea) units in Singapore.
2006 – Raffles Girls' School initiated recruitment of girl cadets for its all girl sea unit, the first in Singapore.
2006 – New Town Secondary School and Hwa Chong Institution become the first two units to receive the Unit Excellence Award for ten consecutive Unit Overall Proficiency Gold Awards at the annual NPCC day parade 2006.
18 April 2009 – NPCC marked its 50th year anniversary at its annual NPCC day parade celebrations at the Home Team Academy. Maris Stella High School NPCC Unit received their Unit Excellence Award for ten consecutive Unit Overall Proficiency Gold Award at the annual NPCC day parade 2008, thus making them the third unit in Singapore to receive this award.
8 January 2011 – NPCC and National Civil Defence Cadet Corps, together the Home Team Cadet Corps, held the Farewell Parade for NPCC Council Chairman Charles Chong. This event marks the end of term of the current NPCC Council, which governs both NPCC and NCDCC.